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my bunn has 2 switches one on the left side to keep it HOT and the front one when brewed to keep it hot . the side switch if off will not heat the water and will not let the front heater be turned on either which is lighted
Service Engine Error 181.2049 Maint failed to prime back pressure
This error most frequently happens during the initial printer setup. Another reason for this error to occur is when using malfunctioning cartridges or cartridges that do not have enough ink to complete the initial setup of the printer.
Inserting a new set of setup cartridges or by using the setup cartridges provided with the machine would resolve this issue. To identify whether you are using the setup cartridges.
If you are already using the new setup cartridges, unplug the power adapter from the back of the printer and re-plug it after five seconds and let the machine attempt a second initial setup.
This model of brewer doesn't allow for changes in the calibration. If you've been using it for a while and notice a change in volume chances are the brewer needs to be cleaned. Here is a link to the full manual. http://www.bunn.com/pdfs/manuals/41980.0000.pdf